Hi,
How to check if list is empty
So if pass null or empty string to the list.. this if condition doesn't work, it still enters the if statement
If (list && list.elements() && list.empty())
How to check for null and empty string?
If it enters the block, it works correctly. The condition says "if the current value is empty". Maybe you overlooked the negation (! operator).
Your question was "How to check for null and empty string?".
Hi Martin,
It doesn't work. If I pass "" or null
If(!enumerator.current()) doesn't work..it enters the if statement in both cases
That's correct. If you create a list and one element (e.g. containing an empty string, for example), the list is not null, elements() returns 1 and empty returns false, because the list isn't empty - it contains one element.
If you want to check values of elements inside the list, you'll need to iterate the list and look at those elements.
For example:
ListEnumerator enumerator = list.getEnumerator(); while (enumerator.moveNext()) { if (!enumerator.current()) { ... } }
Under review
Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.
As AI tools become more common, we’re introducing a Responsible AI Use…
We are honored to recognize Andrés Arias as our Community Spotlight honoree for…
These are the community rock stars!
Stay up to date on forum activity by subscribing.
Sohaib Cheema 777 User Group Leader
André Arnaud de Cal... 630 Super User 2025 Season 2
Martin Dráb 602 Most Valuable Professional
